01 - Whisk together flour, salt, and sugar in a large bowl until well combined.
02 - Cut cold butter into the flour mixture using a pastry cutter or fingertips until the mixture resembles coarse crumbs.
03 - Gradually add ice water, mixing gently until dough comes together. Divide into two equal portions and form into discs. Wrap and refrigerate for at least 1 hour.
04 - Roll out one disc on a lightly floured surface to fit a 9-inch pie plate. Press gently into the plate, trim edges, and refrigerate while preparing the braid.
05 - Roll the second disc to 1/4 inch thickness. Cut twelve long, even strips approximately 1/2 inch wide.
06 - Group strips into three sets of four. Pinch tops together. For each set, working left to right, cross the outermost strip over then under adjacent strips until fully braided.
07 - Transfer braids to the chilled pie crust edge, pressing gently to adhere. Trim excess dough and use water to seal if necessary.
08 - Refrigerate the assembled pie for 15 minutes. Preheat oven to 400°F.
09 - Brush braids with beaten egg mixed with milk. For blind baking, line crust with parchment paper and fill with pie weights.
10 - Bake for 12-15 minutes until golden brown. Remove weights and continue baking if a crispier crust is desired.